Collapse of two mutualistic organisms

[nhmllr]

Are there any well-known/well-studied examples of an ecological collapse of two species that interact in a obligately mutualistic kind of way?

As in, an extinction (or severe decrease in population) in the two species
Also acceptable is a sudden increase in population (but that seems less likely)

Really just any change between two obligately mutualistic species that has a lot of data on it

I understand that this is a ridiculously open ended question
At the moment I'm just trying to get a few ideas for a research project
Hopefully someone who's more immersed in the literature can point me in a direction
Thanks

 

[nickdwaters]

I think you'll find this article to your liking:

http://www.dailymail.co.uk/sciencet...ely-rescue-tropical-islands-ebony-forest.html

 

[remig]

Here is the wikipedia discussion of this topic:
http://en.wikipedia.org/wiki/Mutualisms_and_conservation